Termination w.r.t. Q of the following Term Rewriting System could not be shown:

Q restricted rewrite system:
The TRS R consists of the following rules:

*2(x, *2(y, z)) -> *2(*2(x, y), z)
*2(x, x) -> x

Q is empty.


QTRS
  ↳ DependencyPairsProof

Q restricted rewrite system:
The TRS R consists of the following rules:

*2(x, *2(y, z)) -> *2(*2(x, y), z)
*2(x, x) -> x

Q is empty.

Using Dependency Pairs [1,13] we result in the following initial DP problem:
Q DP problem:
The TRS P consists of the following rules:

*12(x, *2(y, z)) -> *12(x, y)
*12(x, *2(y, z)) -> *12(*2(x, y), z)

The TRS R consists of the following rules:

*2(x, *2(y, z)) -> *2(*2(x, y), z)
*2(x, x) -> x

Q is empty.
We have to consider all minimal (P,Q,R)-chains.

↳ QTRS
  ↳ DependencyPairsProof
QDP

Q DP problem:
The TRS P consists of the following rules:

*12(x, *2(y, z)) -> *12(x, y)
*12(x, *2(y, z)) -> *12(*2(x, y), z)

The TRS R consists of the following rules:

*2(x, *2(y, z)) -> *2(*2(x, y), z)
*2(x, x) -> x

Q is empty.
We have to consider all minimal (P,Q,R)-chains.